Benchmark: JavScript spread operator vs Object.assign

Tests:

Using spread operator
const first = {test: 1}; const second = {hi: 2}; const final = {...first, ...second}
Using Object.assign
const first = {test: 1}; const second = {hi: 2}; const final = Object.assign({}, first, second);

Rendered benchmark preparation results:

Previous results

Test case name	Result
Using spread operator
Using Object.assign

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36

Browser/OS: Chrome 73 on Windows

Test name	Executions per second
Using spread operator	3304560.0 Ops/sec
Using Object.assign	2906283.0 Ops/sec

JavScript spread operator vs Object.assign (version: 0)